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Finding the Fourth Proportional to 745.50, 1,026.68 and 652.25

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Solution

The fourth proportional to 745.50, 1,026.68 and 652.25 is: 898.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.50 : 1,026.68 = 652.25 : x
  2. Step 2: Convert to fraction form
    745.50/1,026.68 = 652.25/x
  3. Step 3: Cross multiply
    745.50x = 1,026.68 × 652.25
  4. Step 4: Simplify right side
    745.50x = 669,651.34
  5. Step 5: Solve for x
    x = 669,651.34/745.50
  6. Step 6: Final answer
    x = 898.25

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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.