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Finding the Fourth Proportional to 473.10, 709.86 and 256.44

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Solution

The fourth proportional to 473.10, 709.86 and 256.44 is: 384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.10 : 709.86 = 256.44 : x
  2. Step 2: Convert to fraction form
    473.10/709.86 = 256.44/x
  3. Step 3: Cross multiply
    473.10x = 709.86 × 256.44
  4. Step 4: Simplify right side
    473.10x = 182,036.50
  5. Step 5: Solve for x
    x = 182,036.50/473.10
  6. Step 6: Final answer
    x = 384.77

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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.