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Finding the Fourth Proportional to 1,684.78, 2,527.56 and 530.50

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Solution

The fourth proportional to 1,684.78, 2,527.56 and 530.50 is: 795.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.78 : 2,527.56 = 530.50 : x
  2. Step 2: Convert to fraction form
    1,684.78/2,527.56 = 530.50/x
  3. Step 3: Cross multiply
    1,684.78x = 2,527.56 × 530.50
  4. Step 4: Simplify right side
    1,684.78x = 1,340,870.58
  5. Step 5: Solve for x
    x = 1,340,870.58/1,684.78
  6. Step 6: Final answer
    x = 795.87

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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.