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Finding the Fourth Proportional to 1,045.51, 1,560.63 and 968.42

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Solution

The fourth proportional to 1,045.51, 1,560.63 and 968.42 is: 1,445.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.51 : 1,560.63 = 968.42 : x
  2. Step 2: Convert to fraction form
    1,045.51/1,560.63 = 968.42/x
  3. Step 3: Cross multiply
    1,045.51x = 1,560.63 × 968.42
  4. Step 4: Simplify right side
    1,045.51x = 1,511,340.46
  5. Step 5: Solve for x
    x = 1,511,340.46/1,045.51
  6. Step 6: Final answer
    x = 1,445.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.