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Finding the Fourth Proportional to 762.38, 1,052.77 and 483.11

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Solution

The fourth proportional to 762.38, 1,052.77 and 483.11 is: 667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.38 : 1,052.77 = 483.11 : x
  2. Step 2: Convert to fraction form
    762.38/1,052.77 = 483.11/x
  3. Step 3: Cross multiply
    762.38x = 1,052.77 × 483.11
  4. Step 4: Simplify right side
    762.38x = 508,603.71
  5. Step 5: Solve for x
    x = 508,603.71/762.38
  6. Step 6: Final answer
    x = 667.13

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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.