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Finding the Fourth Proportional to 530.61, 795.89 and 325.21

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Solution

The fourth proportional to 530.61, 795.89 and 325.21 is: 487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.61 : 795.89 = 325.21 : x
  2. Step 2: Convert to fraction form
    530.61/795.89 = 325.21/x
  3. Step 3: Cross multiply
    530.61x = 795.89 × 325.21
  4. Step 4: Simplify right side
    530.61x = 258,829.76
  5. Step 5: Solve for x
    x = 258,829.76/530.61
  6. Step 6: Final answer
    x = 487.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.