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Finding the Fourth Proportional to 630.06, 945.66 and 356.28

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Solution

The fourth proportional to 630.06, 945.66 and 356.28 is: 534.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.06 : 945.66 = 356.28 : x
  2. Step 2: Convert to fraction form
    630.06/945.66 = 356.28/x
  3. Step 3: Cross multiply
    630.06x = 945.66 × 356.28
  4. Step 4: Simplify right side
    630.06x = 336,919.74
  5. Step 5: Solve for x
    x = 336,919.74/630.06
  6. Step 6: Final answer
    x = 534.74

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1.5x scale

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.