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Finding the Fourth Proportional to 1,658.79, 2,290.08 and 1,100.02

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Solution

The fourth proportional to 1,658.79, 2,290.08 and 1,100.02 is: 1,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.79 : 2,290.08 = 1,100.02 : x
  2. Step 2: Convert to fraction form
    1,658.79/2,290.08 = 1,100.02/x
  3. Step 3: Cross multiply
    1,658.79x = 2,290.08 × 1,100.02
  4. Step 4: Simplify right side
    1,658.79x = 2,519,128.08
  5. Step 5: Solve for x
    x = 2,519,128.08/1,658.79
  6. Step 6: Final answer
    x = 1,518.65

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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.