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Finding the Fourth Proportional to 586.98, 813.78 and 577.80

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Solution

The fourth proportional to 586.98, 813.78 and 577.80 is: 801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.98 : 813.78 = 577.80 : x
  2. Step 2: Convert to fraction form
    586.98/813.78 = 577.80/x
  3. Step 3: Cross multiply
    586.98x = 813.78 × 577.80
  4. Step 4: Simplify right side
    586.98x = 470,202.08
  5. Step 5: Solve for x
    x = 470,202.08/586.98
  6. Step 6: Final answer
    x = 801.05

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.