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Finding the Fourth Proportional to 607.67, 907.62 and 485.56

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Solution

The fourth proportional to 607.67, 907.62 and 485.56 is: 725.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.67 : 907.62 = 485.56 : x
  2. Step 2: Convert to fraction form
    607.67/907.62 = 485.56/x
  3. Step 3: Cross multiply
    607.67x = 907.62 × 485.56
  4. Step 4: Simplify right side
    607.67x = 440,706.01
  5. Step 5: Solve for x
    x = 440,706.01/607.67
  6. Step 6: Final answer
    x = 725.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.