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Finding the Fourth Proportional to 1,396.54, 2,095.71 and 530.86

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Solution

The fourth proportional to 1,396.54, 2,095.71 and 530.86 is: 796.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.54 : 2,095.71 = 530.86 : x
  2. Step 2: Convert to fraction form
    1,396.54/2,095.71 = 530.86/x
  3. Step 3: Cross multiply
    1,396.54x = 2,095.71 × 530.86
  4. Step 4: Simplify right side
    1,396.54x = 1,112,528.61
  5. Step 5: Solve for x
    x = 1,112,528.61/1,396.54
  6. Step 6: Final answer
    x = 796.63

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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.