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Finding the Fourth Proportional to 977.00, 1,465.34 and 327.78

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Solution

The fourth proportional to 977.00, 1,465.34 and 327.78 is: 491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.00 : 1,465.34 = 327.78 : x
  2. Step 2: Convert to fraction form
    977.00/1,465.34 = 327.78/x
  3. Step 3: Cross multiply
    977.00x = 1,465.34 × 327.78
  4. Step 4: Simplify right side
    977.00x = 480,307.51
  5. Step 5: Solve for x
    x = 480,307.51/977.00
  6. Step 6: Final answer
    x = 491.62

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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.