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Finding the Fourth Proportional to 753.29, 1,039.19 and 473.30

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Solution

The fourth proportional to 753.29, 1,039.19 and 473.30 is: 652.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.29 : 1,039.19 = 473.30 : x
  2. Step 2: Convert to fraction form
    753.29/1,039.19 = 473.30/x
  3. Step 3: Cross multiply
    753.29x = 1,039.19 × 473.30
  4. Step 4: Simplify right side
    753.29x = 491,848.63
  5. Step 5: Solve for x
    x = 491,848.63/753.29
  6. Step 6: Final answer
    x = 652.93

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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.