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Finding the Fourth Proportional to 695.96, 1,048.59 and 630.16

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Solution

The fourth proportional to 695.96, 1,048.59 and 630.16 is: 949.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.96 : 1,048.59 = 630.16 : x
  2. Step 2: Convert to fraction form
    695.96/1,048.59 = 630.16/x
  3. Step 3: Cross multiply
    695.96x = 1,048.59 × 630.16
  4. Step 4: Simplify right side
    695.96x = 660,779.47
  5. Step 5: Solve for x
    x = 660,779.47/695.96
  6. Step 6: Final answer
    x = 949.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.