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Finding the Fourth Proportional to 1,302.51, 1,954.55 and 522.40

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Solution

The fourth proportional to 1,302.51, 1,954.55 and 522.40 is: 783.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.51 : 1,954.55 = 522.40 : x
  2. Step 2: Convert to fraction form
    1,302.51/1,954.55 = 522.40/x
  3. Step 3: Cross multiply
    1,302.51x = 1,954.55 × 522.40
  4. Step 4: Simplify right side
    1,302.51x = 1,021,056.92
  5. Step 5: Solve for x
    x = 1,021,056.92/1,302.51
  6. Step 6: Final answer
    x = 783.91

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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.