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Finding the Fourth Proportional to 590.18, 813.66 and 492.08

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Solution

The fourth proportional to 590.18, 813.66 and 492.08 is: 678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.18 : 813.66 = 492.08 : x
  2. Step 2: Convert to fraction form
    590.18/813.66 = 492.08/x
  3. Step 3: Cross multiply
    590.18x = 813.66 × 492.08
  4. Step 4: Simplify right side
    590.18x = 400,385.81
  5. Step 5: Solve for x
    x = 400,385.81/590.18
  6. Step 6: Final answer
    x = 678.41

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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.