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Finding the Fourth Proportional to 693.95, 957.32 and 445.17

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Solution

The fourth proportional to 693.95, 957.32 and 445.17 is: 614.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.95 : 957.32 = 445.17 : x
  2. Step 2: Convert to fraction form
    693.95/957.32 = 445.17/x
  3. Step 3: Cross multiply
    693.95x = 957.32 × 445.17
  4. Step 4: Simplify right side
    693.95x = 426,173.18
  5. Step 5: Solve for x
    x = 426,173.18/693.95
  6. Step 6: Final answer
    x = 614.13

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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.