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Finding the Fourth Proportional to 530.03, 731.21 and 397.46

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Solution

The fourth proportional to 530.03, 731.21 and 397.46 is: 548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.03 : 731.21 = 397.46 : x
  2. Step 2: Convert to fraction form
    530.03/731.21 = 397.46/x
  3. Step 3: Cross multiply
    530.03x = 731.21 × 397.46
  4. Step 4: Simplify right side
    530.03x = 290,621.08
  5. Step 5: Solve for x
    x = 290,621.08/530.03
  6. Step 6: Final answer
    x = 548.32

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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.