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Finding the Fourth Proportional to 653.38, 901.40 and 373.56

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Solution

The fourth proportional to 653.38, 901.40 and 373.56 is: 515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.38 : 901.40 = 373.56 : x
  2. Step 2: Convert to fraction form
    653.38/901.40 = 373.56/x
  3. Step 3: Cross multiply
    653.38x = 901.40 × 373.56
  4. Step 4: Simplify right side
    653.38x = 336,726.98
  5. Step 5: Solve for x
    x = 336,726.98/653.38
  6. Step 6: Final answer
    x = 515.36

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1.5x scale

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.