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Finding the Fourth Proportional to 750.26, 1,035.80 and 502.40

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Solution

The fourth proportional to 750.26, 1,035.80 and 502.40 is: 693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.26 : 1,035.80 = 502.40 : x
  2. Step 2: Convert to fraction form
    750.26/1,035.80 = 502.40/x
  3. Step 3: Cross multiply
    750.26x = 1,035.80 × 502.40
  4. Step 4: Simplify right side
    750.26x = 520,385.92
  5. Step 5: Solve for x
    x = 520,385.92/750.26
  6. Step 6: Final answer
    x = 693.61

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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.