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Finding the Fourth Proportional to 530.55, 732.06 and 447.48

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Solution

The fourth proportional to 530.55, 732.06 and 447.48 is: 617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.55 : 732.06 = 447.48 : x
  2. Step 2: Convert to fraction form
    530.55/732.06 = 447.48/x
  3. Step 3: Cross multiply
    530.55x = 732.06 × 447.48
  4. Step 4: Simplify right side
    530.55x = 327,582.21
  5. Step 5: Solve for x
    x = 327,582.21/530.55
  6. Step 6: Final answer
    x = 617.44

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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.