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Finding the Fourth Proportional to 555.64, 833.72 and 394.36

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Solution

The fourth proportional to 555.64, 833.72 and 394.36 is: 591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.64 : 833.72 = 394.36 : x
  2. Step 2: Convert to fraction form
    555.64/833.72 = 394.36/x
  3. Step 3: Cross multiply
    555.64x = 833.72 × 394.36
  4. Step 4: Simplify right side
    555.64x = 328,785.82
  5. Step 5: Solve for x
    x = 328,785.82/555.64
  6. Step 6: Final answer
    x = 591.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.