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Finding the Fourth Proportional to 732.30, 1,009.37 and 519.69

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Solution

The fourth proportional to 732.30, 1,009.37 and 519.69 is: 716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.30 : 1,009.37 = 519.69 : x
  2. Step 2: Convert to fraction form
    732.30/1,009.37 = 519.69/x
  3. Step 3: Cross multiply
    732.30x = 1,009.37 × 519.69
  4. Step 4: Simplify right side
    732.30x = 524,559.50
  5. Step 5: Solve for x
    x = 524,559.50/732.30
  6. Step 6: Final answer
    x = 716.32

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1.5x scale

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.