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Finding the Fourth Proportional to 757.10, 1,044.32 and 477.10

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Solution

The fourth proportional to 757.10, 1,044.32 and 477.10 is: 658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.10 : 1,044.32 = 477.10 : x
  2. Step 2: Convert to fraction form
    757.10/1,044.32 = 477.10/x
  3. Step 3: Cross multiply
    757.10x = 1,044.32 × 477.10
  4. Step 4: Simplify right side
    757.10x = 498,245.07
  5. Step 5: Solve for x
    x = 498,245.07/757.10
  6. Step 6: Final answer
    x = 658.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 758.10, 1,045.70 and 478.10
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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.