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Finding the Fourth Proportional to 782.38, 1,079.75 and 433.13

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Solution

The fourth proportional to 782.38, 1,079.75 and 433.13 is: 597.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    782.38 : 1,079.75 = 433.13 : x
  2. Step 2: Convert to fraction form
    782.38/1,079.75 = 433.13/x
  3. Step 3: Cross multiply
    782.38x = 1,079.75 × 433.13
  4. Step 4: Simplify right side
    782.38x = 467,672.12
  5. Step 5: Solve for x
    x = 467,672.12/782.38
  6. Step 6: Final answer
    x = 597.76

Related Problems

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Half scale
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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.