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Finding the Fourth Proportional to 529.10, 793.65 and 310.40

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Solution

The fourth proportional to 529.10, 793.65 and 310.40 is: 465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.10 : 793.65 = 310.40 : x
  2. Step 2: Convert to fraction form
    529.10/793.65 = 310.40/x
  3. Step 3: Cross multiply
    529.10x = 793.65 × 310.40
  4. Step 4: Simplify right side
    529.10x = 246,348.96
  5. Step 5: Solve for x
    x = 246,348.96/529.10
  6. Step 6: Final answer
    x = 465.60

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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.