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Finding the Fourth Proportional to 846.87, 1,168.65 and 497.55

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Solution

The fourth proportional to 846.87, 1,168.65 and 497.55 is: 686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.87 : 1,168.65 = 497.55 : x
  2. Step 2: Convert to fraction form
    846.87/1,168.65 = 497.55/x
  3. Step 3: Cross multiply
    846.87x = 1,168.65 × 497.55
  4. Step 4: Simplify right side
    846.87x = 581,461.81
  5. Step 5: Solve for x
    x = 581,461.81/846.87
  6. Step 6: Final answer
    x = 686.60

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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.