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Finding the Fourth Proportional to 801.55, 1,106.12 and 482.71

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Solution

The fourth proportional to 801.55, 1,106.12 and 482.71 is: 666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.55 : 1,106.12 = 482.71 : x
  2. Step 2: Convert to fraction form
    801.55/1,106.12 = 482.71/x
  3. Step 3: Cross multiply
    801.55x = 1,106.12 × 482.71
  4. Step 4: Simplify right side
    801.55x = 533,932.77
  5. Step 5: Solve for x
    x = 533,932.77/801.55
  6. Step 6: Final answer
    x = 666.13

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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.