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Finding the Fourth Proportional to 530.64, 728.36 and 508.08

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Solution

The fourth proportional to 530.64, 728.36 and 508.08 is: 697.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.64 : 728.36 = 508.08 : x
  2. Step 2: Convert to fraction form
    530.64/728.36 = 508.08/x
  3. Step 3: Cross multiply
    530.64x = 728.36 × 508.08
  4. Step 4: Simplify right side
    530.64x = 370,062.61
  5. Step 5: Solve for x
    x = 370,062.61/530.64
  6. Step 6: Final answer
    x = 697.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.