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Finding the Fourth Proportional to 530.18, 795.28 and 145.43

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Solution

The fourth proportional to 530.18, 795.28 and 145.43 is: 218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.18 : 795.28 = 145.43 : x
  2. Step 2: Convert to fraction form
    530.18/795.28 = 145.43/x
  3. Step 3: Cross multiply
    530.18x = 795.28 × 145.43
  4. Step 4: Simplify right side
    530.18x = 115,657.57
  5. Step 5: Solve for x
    x = 115,657.57/530.18
  6. Step 6: Final answer
    x = 218.15

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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.