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Finding the Fourth Proportional to 898.06, 1,343.72 and 624.68

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Solution

The fourth proportional to 898.06, 1,343.72 and 624.68 is: 934.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.06 : 1,343.72 = 624.68 : x
  2. Step 2: Convert to fraction form
    898.06/1,343.72 = 624.68/x
  3. Step 3: Cross multiply
    898.06x = 1,343.72 × 624.68
  4. Step 4: Simplify right side
    898.06x = 839,395.01
  5. Step 5: Solve for x
    x = 839,395.01/898.06
  6. Step 6: Final answer
    x = 934.68

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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.