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Finding the Fourth Proportional to 750.71, 1,036.10 and 554.79

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Solution

The fourth proportional to 750.71, 1,036.10 and 554.79 is: 765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.71 : 1,036.10 = 554.79 : x
  2. Step 2: Convert to fraction form
    750.71/1,036.10 = 554.79/x
  3. Step 3: Cross multiply
    750.71x = 1,036.10 × 554.79
  4. Step 4: Simplify right side
    750.71x = 574,817.92
  5. Step 5: Solve for x
    x = 574,817.92/750.71
  6. Step 6: Final answer
    x = 765.70

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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.