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Finding the Fourth Proportional to 530.01, 731.46 and 308.95

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Solution

The fourth proportional to 530.01, 731.46 and 308.95 is: 426.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.01 : 731.46 = 308.95 : x
  2. Step 2: Convert to fraction form
    530.01/731.46 = 308.95/x
  3. Step 3: Cross multiply
    530.01x = 731.46 × 308.95
  4. Step 4: Simplify right side
    530.01x = 225,979.36
  5. Step 5: Solve for x
    x = 225,979.36/530.01
  6. Step 6: Final answer
    x = 426.37

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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.