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Finding the Fourth Proportional to 692.70, 954.60 and 495.87

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Solution

The fourth proportional to 692.70, 954.60 and 495.87 is: 683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.70 : 954.60 = 495.87 : x
  2. Step 2: Convert to fraction form
    692.70/954.60 = 495.87/x
  3. Step 3: Cross multiply
    692.70x = 954.60 × 495.87
  4. Step 4: Simplify right side
    692.70x = 473,357.50
  5. Step 5: Solve for x
    x = 473,357.50/692.70
  6. Step 6: Final answer
    x = 683.35

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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.