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Finding the Fourth Proportional to 556.76, 835.48 and 313.46

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Solution

The fourth proportional to 556.76, 835.48 and 313.46 is: 470.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.76 : 835.48 = 313.46 : x
  2. Step 2: Convert to fraction form
    556.76/835.48 = 313.46/x
  3. Step 3: Cross multiply
    556.76x = 835.48 × 313.46
  4. Step 4: Simplify right side
    556.76x = 261,888.91
  5. Step 5: Solve for x
    x = 261,888.91/556.76
  6. Step 6: Final answer
    x = 470.38

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1.5x scale

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.