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Finding the Fourth Proportional to 653.01, 978.84 and 344.19

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Solution

The fourth proportional to 653.01, 978.84 and 344.19 is: 515.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.01 : 978.84 = 344.19 : x
  2. Step 2: Convert to fraction form
    653.01/978.84 = 344.19/x
  3. Step 3: Cross multiply
    653.01x = 978.84 × 344.19
  4. Step 4: Simplify right side
    653.01x = 336,900.32
  5. Step 5: Solve for x
    x = 336,900.32/653.01
  6. Step 6: Final answer
    x = 515.92

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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.