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Finding the Fourth Proportional to 605.10, 907.65 and 525.90

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Solution

The fourth proportional to 605.10, 907.65 and 525.90 is: 788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.10 : 907.65 = 525.90 : x
  2. Step 2: Convert to fraction form
    605.10/907.65 = 525.90/x
  3. Step 3: Cross multiply
    605.10x = 907.65 × 525.90
  4. Step 4: Simplify right side
    605.10x = 477,333.14
  5. Step 5: Solve for x
    x = 477,333.14/605.10
  6. Step 6: Final answer
    x = 788.85

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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.