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Finding the Fourth Proportional to 1,041.31, 1,437 and 569.20

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Solution

The fourth proportional to 1,041.31, 1,437 and 569.20 is: 785.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.31 : 1,437 = 569.20 : x
  2. Step 2: Convert to fraction form
    1,041.31/1,437 = 569.20/x
  3. Step 3: Cross multiply
    1,041.31x = 1,437 × 569.20
  4. Step 4: Simplify right side
    1,041.31x = 817,940.40
  5. Step 5: Solve for x
    x = 817,940.40/1,041.31
  6. Step 6: Final answer
    x = 785.49

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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.