Home / 1,051.17-1,450.67-631.55

Finding the Fourth Proportional to 1,051.17, 1,450.67 and 631.55

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Solution

The fourth proportional to 1,051.17, 1,450.67 and 631.55 is: 871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.17 : 1,450.67 = 631.55 : x
  2. Step 2: Convert to fraction form
    1,051.17/1,450.67 = 631.55/x
  3. Step 3: Cross multiply
    1,051.17x = 1,450.67 × 631.55
  4. Step 4: Simplify right side
    1,051.17x = 916,160.23
  5. Step 5: Solve for x
    x = 916,160.23/1,051.17
  6. Step 6: Final answer
    x = 871.56

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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.