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Finding the Fourth Proportional to 1,477.99, 2,039.70 and 848.51

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Solution

The fourth proportional to 1,477.99, 2,039.70 and 848.51 is: 1,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.99 : 2,039.70 = 848.51 : x
  2. Step 2: Convert to fraction form
    1,477.99/2,039.70 = 848.51/x
  3. Step 3: Cross multiply
    1,477.99x = 2,039.70 × 848.51
  4. Step 4: Simplify right side
    1,477.99x = 1,730,717.95
  5. Step 5: Solve for x
    x = 1,730,717.95/1,477.99
  6. Step 6: Final answer
    x = 1,170.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.