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Finding the Fourth Proportional to 530.58, 732.03 and 309.48

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Solution

The fourth proportional to 530.58, 732.03 and 309.48 is: 426.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.58 : 732.03 = 309.48 : x
  2. Step 2: Convert to fraction form
    530.58/732.03 = 309.48/x
  3. Step 3: Cross multiply
    530.58x = 732.03 × 309.48
  4. Step 4: Simplify right side
    530.58x = 226,548.64
  5. Step 5: Solve for x
    x = 226,548.64/530.58
  6. Step 6: Final answer
    x = 426.98

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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.