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Finding the Fourth Proportional to 1,477.16, 2,215.64 and 552.62

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Solution

The fourth proportional to 1,477.16, 2,215.64 and 552.62 is: 828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.16 : 2,215.64 = 552.62 : x
  2. Step 2: Convert to fraction form
    1,477.16/2,215.64 = 552.62/x
  3. Step 3: Cross multiply
    1,477.16x = 2,215.64 × 552.62
  4. Step 4: Simplify right side
    1,477.16x = 1,224,406.98
  5. Step 5: Solve for x
    x = 1,224,406.98/1,477.16
  6. Step 6: Final answer
    x = 828.89

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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.