Home / 1,108.04-1,529.20-665.93

Finding the Fourth Proportional to 1,108.04, 1,529.20 and 665.93

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Solution

The fourth proportional to 1,108.04, 1,529.20 and 665.93 is: 919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.04 : 1,529.20 = 665.93 : x
  2. Step 2: Convert to fraction form
    1,108.04/1,529.20 = 665.93/x
  3. Step 3: Cross multiply
    1,108.04x = 1,529.20 × 665.93
  4. Step 4: Simplify right side
    1,108.04x = 1,018,340.16
  5. Step 5: Solve for x
    x = 1,018,340.16/1,108.04
  6. Step 6: Final answer
    x = 919.05

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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.