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Finding the Fourth Proportional to 750.35, 1,124.61 and 339.07

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Solution

The fourth proportional to 750.35, 1,124.61 and 339.07 is: 508.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.35 : 1,124.61 = 339.07 : x
  2. Step 2: Convert to fraction form
    750.35/1,124.61 = 339.07/x
  3. Step 3: Cross multiply
    750.35x = 1,124.61 × 339.07
  4. Step 4: Simplify right side
    750.35x = 381,321.51
  5. Step 5: Solve for x
    x = 381,321.51/750.35
  6. Step 6: Final answer
    x = 508.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.