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Finding the Fourth Proportional to 631.36, 946.27 and 265.72

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Solution

The fourth proportional to 631.36, 946.27 and 265.72 is: 398.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.36 : 946.27 = 265.72 : x
  2. Step 2: Convert to fraction form
    631.36/946.27 = 265.72/x
  3. Step 3: Cross multiply
    631.36x = 946.27 × 265.72
  4. Step 4: Simplify right side
    631.36x = 251,442.86
  5. Step 5: Solve for x
    x = 251,442.86/631.36
  6. Step 6: Final answer
    x = 398.26

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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.