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Finding the Fourth Proportional to 477.16, 715.38 and 152.34

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Solution

The fourth proportional to 477.16, 715.38 and 152.34 is: 228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.16 : 715.38 = 152.34 : x
  2. Step 2: Convert to fraction form
    477.16/715.38 = 152.34/x
  3. Step 3: Cross multiply
    477.16x = 715.38 × 152.34
  4. Step 4: Simplify right side
    477.16x = 108,980.99
  5. Step 5: Solve for x
    x = 108,980.99/477.16
  6. Step 6: Final answer
    x = 228.40

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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.