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Finding the Fourth Proportional to 706.96, 975.53 and 392.18

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Solution

The fourth proportional to 706.96, 975.53 and 392.18 is: 541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.96 : 975.53 = 392.18 : x
  2. Step 2: Convert to fraction form
    706.96/975.53 = 392.18/x
  3. Step 3: Cross multiply
    706.96x = 975.53 × 392.18
  4. Step 4: Simplify right side
    706.96x = 382,578.48
  5. Step 5: Solve for x
    x = 382,578.48/706.96
  6. Step 6: Final answer
    x = 541.16

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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.