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Finding the Fourth Proportional to 531.80, 801.65 and 495.80

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Solution

The fourth proportional to 531.80, 801.65 and 495.80 is: 747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.80 : 801.65 = 495.80 : x
  2. Step 2: Convert to fraction form
    531.80/801.65 = 495.80/x
  3. Step 3: Cross multiply
    531.80x = 801.65 × 495.80
  4. Step 4: Simplify right side
    531.80x = 397,458.07
  5. Step 5: Solve for x
    x = 397,458.07/531.80
  6. Step 6: Final answer
    x = 747.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.