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Finding the Fourth Proportional to 530.00, 793.37 and 392.70

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Solution

The fourth proportional to 530.00, 793.37 and 392.70 is: 587.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.00 : 793.37 = 392.70 : x
  2. Step 2: Convert to fraction form
    530.00/793.37 = 392.70/x
  3. Step 3: Cross multiply
    530.00x = 793.37 × 392.70
  4. Step 4: Simplify right side
    530.00x = 311,557.38
  5. Step 5: Solve for x
    x = 311,557.38/530.00
  6. Step 6: Final answer
    x = 587.85

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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.