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Finding the Fourth Proportional to 556.48, 835.08 and 313.48

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Solution

The fourth proportional to 556.48, 835.08 and 313.48 is: 470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.48 : 835.08 = 313.48 : x
  2. Step 2: Convert to fraction form
    556.48/835.08 = 313.48/x
  3. Step 3: Cross multiply
    556.48x = 835.08 × 313.48
  4. Step 4: Simplify right side
    556.48x = 261,780.88
  5. Step 5: Solve for x
    x = 261,780.88/556.48
  6. Step 6: Final answer
    x = 470.42

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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.