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Finding the Fourth Proportional to 534.32, 801.40 and 290.80

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Solution

The fourth proportional to 534.32, 801.40 and 290.80 is: 436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.32 : 801.40 = 290.80 : x
  2. Step 2: Convert to fraction form
    534.32/801.40 = 290.80/x
  3. Step 3: Cross multiply
    534.32x = 801.40 × 290.80
  4. Step 4: Simplify right side
    534.32x = 233,047.12
  5. Step 5: Solve for x
    x = 233,047.12/534.32
  6. Step 6: Final answer
    x = 436.16

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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.