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Finding the Fourth Proportional to 530.55, 732 and 306.48

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Solution

The fourth proportional to 530.55, 732 and 306.48 is: 422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.55 : 732 = 306.48 : x
  2. Step 2: Convert to fraction form
    530.55/732 = 306.48/x
  3. Step 3: Cross multiply
    530.55x = 732 × 306.48
  4. Step 4: Simplify right side
    530.55x = 224,343.36
  5. Step 5: Solve for x
    x = 224,343.36/530.55
  6. Step 6: Final answer
    x = 422.85

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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.