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Finding the Fourth Proportional to 745.98, 1,030.11 and 484.62

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Solution

The fourth proportional to 745.98, 1,030.11 and 484.62 is: 669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.98 : 1,030.11 = 484.62 : x
  2. Step 2: Convert to fraction form
    745.98/1,030.11 = 484.62/x
  3. Step 3: Cross multiply
    745.98x = 1,030.11 × 484.62
  4. Step 4: Simplify right side
    745.98x = 499,211.91
  5. Step 5: Solve for x
    x = 499,211.91/745.98
  6. Step 6: Final answer
    x = 669.20

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Double scale
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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.