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Finding the Fourth Proportional to 587.30, 880.20 and 278.48

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Solution

The fourth proportional to 587.30, 880.20 and 278.48 is: 417.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.30 : 880.20 = 278.48 : x
  2. Step 2: Convert to fraction form
    587.30/880.20 = 278.48/x
  3. Step 3: Cross multiply
    587.30x = 880.20 × 278.48
  4. Step 4: Simplify right side
    587.30x = 245,118.10
  5. Step 5: Solve for x
    x = 245,118.10/587.30
  6. Step 6: Final answer
    x = 417.36

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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.