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Finding the Fourth Proportional to 693.42, 956.74 and 413.53

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Solution

The fourth proportional to 693.42, 956.74 and 413.53 is: 570.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.42 : 956.74 = 413.53 : x
  2. Step 2: Convert to fraction form
    693.42/956.74 = 413.53/x
  3. Step 3: Cross multiply
    693.42x = 956.74 × 413.53
  4. Step 4: Simplify right side
    693.42x = 395,639.66
  5. Step 5: Solve for x
    x = 395,639.66/693.42
  6. Step 6: Final answer
    x = 570.56

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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.