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Finding the Fourth Proportional to 476.80, 715.23 and 152.16

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Solution

The fourth proportional to 476.80, 715.23 and 152.16 is: 228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.80 : 715.23 = 152.16 : x
  2. Step 2: Convert to fraction form
    476.80/715.23 = 152.16/x
  3. Step 3: Cross multiply
    476.80x = 715.23 × 152.16
  4. Step 4: Simplify right side
    476.80x = 108,829.40
  5. Step 5: Solve for x
    x = 108,829.40/476.80
  6. Step 6: Final answer
    x = 228.25

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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.