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Finding the Fourth Proportional to 692.40, 954.54 and 471.36

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Solution

The fourth proportional to 692.40, 954.54 and 471.36 is: 649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.40 : 954.54 = 471.36 : x
  2. Step 2: Convert to fraction form
    692.40/954.54 = 471.36/x
  3. Step 3: Cross multiply
    692.40x = 954.54 × 471.36
  4. Step 4: Simplify right side
    692.40x = 449,931.97
  5. Step 5: Solve for x
    x = 449,931.97/692.40
  6. Step 6: Final answer
    x = 649.82

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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.