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Finding the Fourth Proportional to 556.48, 767.38 and 335.45

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Solution

The fourth proportional to 556.48, 767.38 and 335.45 is: 462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.48 : 767.38 = 335.45 : x
  2. Step 2: Convert to fraction form
    556.48/767.38 = 335.45/x
  3. Step 3: Cross multiply
    556.48x = 767.38 × 335.45
  4. Step 4: Simplify right side
    556.48x = 257,412.11
  5. Step 5: Solve for x
    x = 257,412.11/556.48
  6. Step 6: Final answer
    x = 462.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.