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Finding the Fourth Proportional to 1,057.75, 1,459.70 and 592

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Solution

The fourth proportional to 1,057.75, 1,459.70 and 592 is: 816.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.75 : 1,459.70 = 592 : x
  2. Step 2: Convert to fraction form
    1,057.75/1,459.70 = 592/x
  3. Step 3: Cross multiply
    1,057.75x = 1,459.70 × 592
  4. Step 4: Simplify right side
    1,057.75x = 864,142.40
  5. Step 5: Solve for x
    x = 864,142.40/1,057.75
  6. Step 6: Final answer
    x = 816.96

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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.