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Finding the Fourth Proportional to 693.16, 956.66 and 445.19

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Solution

The fourth proportional to 693.16, 956.66 and 445.19 is: 614.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.16 : 956.66 = 445.19 : x
  2. Step 2: Convert to fraction form
    693.16/956.66 = 445.19/x
  3. Step 3: Cross multiply
    693.16x = 956.66 × 445.19
  4. Step 4: Simplify right side
    693.16x = 425,888.46
  5. Step 5: Solve for x
    x = 425,888.46/693.16
  6. Step 6: Final answer
    x = 614.42

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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.