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Finding the Fourth Proportional to 745.88, 1,028.97 and 525.08

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Solution

The fourth proportional to 745.88, 1,028.97 and 525.08 is: 724.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.88 : 1,028.97 = 525.08 : x
  2. Step 2: Convert to fraction form
    745.88/1,028.97 = 525.08/x
  3. Step 3: Cross multiply
    745.88x = 1,028.97 × 525.08
  4. Step 4: Simplify right side
    745.88x = 540,294.14
  5. Step 5: Solve for x
    x = 540,294.14/745.88
  6. Step 6: Final answer
    x = 724.38

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.