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Finding the Fourth Proportional to 1,401.54, 2,102.58 and 477.06

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Solution

The fourth proportional to 1,401.54, 2,102.58 and 477.06 is: 715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.54 : 2,102.58 = 477.06 : x
  2. Step 2: Convert to fraction form
    1,401.54/2,102.58 = 477.06/x
  3. Step 3: Cross multiply
    1,401.54x = 2,102.58 × 477.06
  4. Step 4: Simplify right side
    1,401.54x = 1,003,056.81
  5. Step 5: Solve for x
    x = 1,003,056.81/1,401.54
  6. Step 6: Final answer
    x = 715.68

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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.