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Finding the Fourth Proportional to 793.90, 1,095.72 and 462.30

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Solution

The fourth proportional to 793.90, 1,095.72 and 462.30 is: 638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.90 : 1,095.72 = 462.30 : x
  2. Step 2: Convert to fraction form
    793.90/1,095.72 = 462.30/x
  3. Step 3: Cross multiply
    793.90x = 1,095.72 × 462.30
  4. Step 4: Simplify right side
    793.90x = 506,551.36
  5. Step 5: Solve for x
    x = 506,551.36/793.90
  6. Step 6: Final answer
    x = 638.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.