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Finding the Fourth Proportional to 590.91, 886.70 and 278.51

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Solution

The fourth proportional to 590.91, 886.70 and 278.51 is: 417.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.91 : 886.70 = 278.51 : x
  2. Step 2: Convert to fraction form
    590.91/886.70 = 278.51/x
  3. Step 3: Cross multiply
    590.91x = 886.70 × 278.51
  4. Step 4: Simplify right side
    590.91x = 246,949.51
  5. Step 5: Solve for x
    x = 246,949.51/590.91
  6. Step 6: Final answer
    x = 417.91

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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.