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Finding the Fourth Proportional to 1,302.76, 1,953.28 and 522.19

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Solution

The fourth proportional to 1,302.76, 1,953.28 and 522.19 is: 782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.76 : 1,953.28 = 522.19 : x
  2. Step 2: Convert to fraction form
    1,302.76/1,953.28 = 522.19/x
  3. Step 3: Cross multiply
    1,302.76x = 1,953.28 × 522.19
  4. Step 4: Simplify right side
    1,302.76x = 1,019,970.91
  5. Step 5: Solve for x
    x = 1,019,970.91/1,302.76
  6. Step 6: Final answer
    x = 782.93

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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.