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Finding the Fourth Proportional to 456.94, 630.69 and 260.45

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Solution

The fourth proportional to 456.94, 630.69 and 260.45 is: 359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.94 : 630.69 = 260.45 : x
  2. Step 2: Convert to fraction form
    456.94/630.69 = 260.45/x
  3. Step 3: Cross multiply
    456.94x = 630.69 × 260.45
  4. Step 4: Simplify right side
    456.94x = 164,261.45
  5. Step 5: Solve for x
    x = 164,261.45/456.94
  6. Step 6: Final answer
    x = 359.48

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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.