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Finding the Fourth Proportional to 587.91, 877.64 and 545.19

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Solution

The fourth proportional to 587.91, 877.64 and 545.19 is: 813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.91 : 877.64 = 545.19 : x
  2. Step 2: Convert to fraction form
    587.91/877.64 = 545.19/x
  3. Step 3: Cross multiply
    587.91x = 877.64 × 545.19
  4. Step 4: Simplify right side
    587.91x = 478,480.55
  5. Step 5: Solve for x
    x = 478,480.55/587.91
  6. Step 6: Final answer
    x = 813.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.