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Finding the Fourth Proportional to 530.88, 732.18 and 321.04

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Solution

The fourth proportional to 530.88, 732.18 and 321.04 is: 442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.88 : 732.18 = 321.04 : x
  2. Step 2: Convert to fraction form
    530.88/732.18 = 321.04/x
  3. Step 3: Cross multiply
    530.88x = 732.18 × 321.04
  4. Step 4: Simplify right side
    530.88x = 235,059.07
  5. Step 5: Solve for x
    x = 235,059.07/530.88
  6. Step 6: Final answer
    x = 442.77

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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.