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Finding the Fourth Proportional to 530.19, 790.18 and 529.38

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Solution

The fourth proportional to 530.19, 790.18 and 529.38 is: 788.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.19 : 790.18 = 529.38 : x
  2. Step 2: Convert to fraction form
    530.19/790.18 = 529.38/x
  3. Step 3: Cross multiply
    530.19x = 790.18 × 529.38
  4. Step 4: Simplify right side
    530.19x = 418,304.16
  5. Step 5: Solve for x
    x = 418,304.16/530.19
  6. Step 6: Final answer
    x = 788.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.