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Finding the Fourth Proportional to 526.66, 789.50 and 491.11

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Solution

The fourth proportional to 526.66, 789.50 and 491.11 is: 736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.66 : 789.50 = 491.11 : x
  2. Step 2: Convert to fraction form
    526.66/789.50 = 491.11/x
  3. Step 3: Cross multiply
    526.66x = 789.50 × 491.11
  4. Step 4: Simplify right side
    526.66x = 387,730.60
  5. Step 5: Solve for x
    x = 387,730.60/526.66
  6. Step 6: Final answer
    x = 736.21

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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.