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Finding the Fourth Proportional to 425.46, 587.04 and 278.46

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Solution

The fourth proportional to 425.46, 587.04 and 278.46 is: 384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.46 : 587.04 = 278.46 : x
  2. Step 2: Convert to fraction form
    425.46/587.04 = 278.46/x
  3. Step 3: Cross multiply
    425.46x = 587.04 × 278.46
  4. Step 4: Simplify right side
    425.46x = 163,467.16
  5. Step 5: Solve for x
    x = 163,467.16/425.46
  6. Step 6: Final answer
    x = 384.21

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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.