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Finding the Fourth Proportional to 1,117.61, 1,675.32 and 532.45

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Solution

The fourth proportional to 1,117.61, 1,675.32 and 532.45 is: 798.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.61 : 1,675.32 = 532.45 : x
  2. Step 2: Convert to fraction form
    1,117.61/1,675.32 = 532.45/x
  3. Step 3: Cross multiply
    1,117.61x = 1,675.32 × 532.45
  4. Step 4: Simplify right side
    1,117.61x = 892,024.13
  5. Step 5: Solve for x
    x = 892,024.13/1,117.61
  6. Step 6: Final answer
    x = 798.16

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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.