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Finding the Fourth Proportional to 556.21, 767.50 and 332.15

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Solution

The fourth proportional to 556.21, 767.50 and 332.15 is: 458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.21 : 767.50 = 332.15 : x
  2. Step 2: Convert to fraction form
    556.21/767.50 = 332.15/x
  3. Step 3: Cross multiply
    556.21x = 767.50 × 332.15
  4. Step 4: Simplify right side
    556.21x = 254,919.63
  5. Step 5: Solve for x
    x = 254,919.63/556.21
  6. Step 6: Final answer
    x = 458.32

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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.