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Finding the Fourth Proportional to 460.90, 692.70 and 456.04

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Solution

The fourth proportional to 460.90, 692.70 and 456.04 is: 685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.90 : 692.70 = 456.04 : x
  2. Step 2: Convert to fraction form
    460.90/692.70 = 456.04/x
  3. Step 3: Cross multiply
    460.90x = 692.70 × 456.04
  4. Step 4: Simplify right side
    460.90x = 315,898.91
  5. Step 5: Solve for x
    x = 315,898.91/460.90
  6. Step 6: Final answer
    x = 685.40

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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.