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Finding the Fourth Proportional to 687.72, 950.54 and 608.48

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Solution

The fourth proportional to 687.72, 950.54 and 608.48 is: 841.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    687.72 : 950.54 = 608.48 : x
  2. Step 2: Convert to fraction form
    687.72/950.54 = 608.48/x
  3. Step 3: Cross multiply
    687.72x = 950.54 × 608.48
  4. Step 4: Simplify right side
    687.72x = 578,384.58
  5. Step 5: Solve for x
    x = 578,384.58/687.72
  6. Step 6: Final answer
    x = 841.02

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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.