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Finding the Fourth Proportional to 835.46, 1,152.90 and 462.42

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Solution

The fourth proportional to 835.46, 1,152.90 and 462.42 is: 638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.46 : 1,152.90 = 462.42 : x
  2. Step 2: Convert to fraction form
    835.46/1,152.90 = 462.42/x
  3. Step 3: Cross multiply
    835.46x = 1,152.90 × 462.42
  4. Step 4: Simplify right side
    835.46x = 533,124.02
  5. Step 5: Solve for x
    x = 533,124.02/835.46
  6. Step 6: Final answer
    x = 638.12

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Double scale
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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.