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Finding the Fourth Proportional to 1,667.80, 2,502.40 and 897.40

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Solution

The fourth proportional to 1,667.80, 2,502.40 and 897.40 is: 1,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.80 : 2,502.40 = 897.40 : x
  2. Step 2: Convert to fraction form
    1,667.80/2,502.40 = 897.40/x
  3. Step 3: Cross multiply
    1,667.80x = 2,502.40 × 897.40
  4. Step 4: Simplify right side
    1,667.80x = 2,245,653.76
  5. Step 5: Solve for x
    x = 2,245,653.76/1,667.80
  6. Step 6: Final answer
    x = 1,346.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.