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Finding the Fourth Proportional to 568.36, 848.39 and 487.72

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Solution

The fourth proportional to 568.36, 848.39 and 487.72 is: 728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.36 : 848.39 = 487.72 : x
  2. Step 2: Convert to fraction form
    568.36/848.39 = 487.72/x
  3. Step 3: Cross multiply
    568.36x = 848.39 × 487.72
  4. Step 4: Simplify right side
    568.36x = 413,776.77
  5. Step 5: Solve for x
    x = 413,776.77/568.36
  6. Step 6: Final answer
    x = 728.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.