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Finding the Fourth Proportional to 835.10, 1,152.40 and 462.07

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Solution

The fourth proportional to 835.10, 1,152.40 and 462.07 is: 637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.10 : 1,152.40 = 462.07 : x
  2. Step 2: Convert to fraction form
    835.10/1,152.40 = 462.07/x
  3. Step 3: Cross multiply
    835.10x = 1,152.40 × 462.07
  4. Step 4: Simplify right side
    835.10x = 532,490.62
  5. Step 5: Solve for x
    x = 532,490.62/835.10
  6. Step 6: Final answer
    x = 637.64

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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.