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Finding the Fourth Proportional to 653.64, 901.26 and 578.72

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Solution

The fourth proportional to 653.64, 901.26 and 578.72 is: 797.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.64 : 901.26 = 578.72 : x
  2. Step 2: Convert to fraction form
    653.64/901.26 = 578.72/x
  3. Step 3: Cross multiply
    653.64x = 901.26 × 578.72
  4. Step 4: Simplify right side
    653.64x = 521,577.19
  5. Step 5: Solve for x
    x = 521,577.19/653.64
  6. Step 6: Final answer
    x = 797.96

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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.