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Finding the Fourth Proportional to 953.98, 1,428.59 and 606.29

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Solution

The fourth proportional to 953.98, 1,428.59 and 606.29 is: 907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.98 : 1,428.59 = 606.29 : x
  2. Step 2: Convert to fraction form
    953.98/1,428.59 = 606.29/x
  3. Step 3: Cross multiply
    953.98x = 1,428.59 × 606.29
  4. Step 4: Simplify right side
    953.98x = 866,130.79
  5. Step 5: Solve for x
    x = 866,130.79/953.98
  6. Step 6: Final answer
    x = 907.92

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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.