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Finding the Fourth Proportional to 693.66, 956.98 and 413.58

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Solution

The fourth proportional to 693.66, 956.98 and 413.58 is: 570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.66 : 956.98 = 413.58 : x
  2. Step 2: Convert to fraction form
    693.66/956.98 = 413.58/x
  3. Step 3: Cross multiply
    693.66x = 956.98 × 413.58
  4. Step 4: Simplify right side
    693.66x = 395,787.79
  5. Step 5: Solve for x
    x = 395,787.79/693.66
  6. Step 6: Final answer
    x = 570.58

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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.