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Finding the Fourth Proportional to 897.75, 1,344.78 and 624.42

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Solution

The fourth proportional to 897.75, 1,344.78 and 624.42 is: 935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.75 : 1,344.78 = 624.42 : x
  2. Step 2: Convert to fraction form
    897.75/1,344.78 = 624.42/x
  3. Step 3: Cross multiply
    897.75x = 1,344.78 × 624.42
  4. Step 4: Simplify right side
    897.75x = 839,707.53
  5. Step 5: Solve for x
    x = 839,707.53/897.75
  6. Step 6: Final answer
    x = 935.35

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Double scale
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1.5x scale

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.