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Finding the Fourth Proportional to 650.88, 977.76 and 435.60

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Solution

The fourth proportional to 650.88, 977.76 and 435.60 is: 654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 977.76 = 435.60 : x
  2. Step 2: Convert to fraction form
    650.88/977.76 = 435.60/x
  3. Step 3: Cross multiply
    650.88x = 977.76 × 435.60
  4. Step 4: Simplify right side
    650.88x = 425,912.26
  5. Step 5: Solve for x
    x = 425,912.26/650.88
  6. Step 6: Final answer
    x = 654.36

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1.5x scale

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.