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Finding the Fourth Proportional to 953.79, 1,433.08 and 607.28

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Solution

The fourth proportional to 953.79, 1,433.08 and 607.28 is: 912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.79 : 1,433.08 = 607.28 : x
  2. Step 2: Convert to fraction form
    953.79/1,433.08 = 607.28/x
  3. Step 3: Cross multiply
    953.79x = 1,433.08 × 607.28
  4. Step 4: Simplify right side
    953.79x = 870,282.34
  5. Step 5: Solve for x
    x = 870,282.34/953.79
  6. Step 6: Final answer
    x = 912.45

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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.