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Finding the Fourth Proportional to 653.24, 901.65 and 620.19

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Solution

The fourth proportional to 653.24, 901.65 and 620.19 is: 856.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.24 : 901.65 = 620.19 : x
  2. Step 2: Convert to fraction form
    653.24/901.65 = 620.19/x
  3. Step 3: Cross multiply
    653.24x = 901.65 × 620.19
  4. Step 4: Simplify right side
    653.24x = 559,194.31
  5. Step 5: Solve for x
    x = 559,194.31/653.24
  6. Step 6: Final answer
    x = 856.04

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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.