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Finding the Fourth Proportional to 693.73, 957.36 and 457.39

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Solution

The fourth proportional to 693.73, 957.36 and 457.39 is: 631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.73 : 957.36 = 457.39 : x
  2. Step 2: Convert to fraction form
    693.73/957.36 = 457.39/x
  3. Step 3: Cross multiply
    693.73x = 957.36 × 457.39
  4. Step 4: Simplify right side
    693.73x = 437,886.89
  5. Step 5: Solve for x
    x = 437,886.89/693.73
  6. Step 6: Final answer
    x = 631.21

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Double scale
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1.5x scale

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.