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Finding the Fourth Proportional to 477.08, 715.60 and 148.02

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Solution

The fourth proportional to 477.08, 715.60 and 148.02 is: 222.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.08 : 715.60 = 148.02 : x
  2. Step 2: Convert to fraction form
    477.08/715.60 = 148.02/x
  3. Step 3: Cross multiply
    477.08x = 715.60 × 148.02
  4. Step 4: Simplify right side
    477.08x = 105,923.11
  5. Step 5: Solve for x
    x = 105,923.11/477.08
  6. Step 6: Final answer
    x = 222.02

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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.