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Finding the Fourth Proportional to 953.93, 1,428.61 and 606.18

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Solution

The fourth proportional to 953.93, 1,428.61 and 606.18 is: 907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.93 : 1,428.61 = 606.18 : x
  2. Step 2: Convert to fraction form
    953.93/1,428.61 = 606.18/x
  3. Step 3: Cross multiply
    953.93x = 1,428.61 × 606.18
  4. Step 4: Simplify right side
    953.93x = 865,987.94
  5. Step 5: Solve for x
    x = 865,987.94/953.93
  6. Step 6: Final answer
    x = 907.81

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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.