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Finding the Fourth Proportional to 630.69, 945.50 and 265.74

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Solution

The fourth proportional to 630.69, 945.50 and 265.74 is: 398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.69 : 945.50 = 265.74 : x
  2. Step 2: Convert to fraction form
    630.69/945.50 = 265.74/x
  3. Step 3: Cross multiply
    630.69x = 945.50 × 265.74
  4. Step 4: Simplify right side
    630.69x = 251,255.84
  5. Step 5: Solve for x
    x = 251,255.84/630.69
  6. Step 6: Final answer
    x = 398.38

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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.