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Finding the Fourth Proportional to 656.66, 984.71 and 348.45

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Solution

The fourth proportional to 656.66, 984.71 and 348.45 is: 522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.66 : 984.71 = 348.45 : x
  2. Step 2: Convert to fraction form
    656.66/984.71 = 348.45/x
  3. Step 3: Cross multiply
    656.66x = 984.71 × 348.45
  4. Step 4: Simplify right side
    656.66x = 343,122.20
  5. Step 5: Solve for x
    x = 343,122.20/656.66
  6. Step 6: Final answer
    x = 522.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.