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Finding the Fourth Proportional to 1,455.93, 2,185.44 and 908.51

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Solution

The fourth proportional to 1,455.93, 2,185.44 and 908.51 is: 1,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.93 : 2,185.44 = 908.51 : x
  2. Step 2: Convert to fraction form
    1,455.93/2,185.44 = 908.51/x
  3. Step 3: Cross multiply
    1,455.93x = 2,185.44 × 908.51
  4. Step 4: Simplify right side
    1,455.93x = 1,985,483.17
  5. Step 5: Solve for x
    x = 1,985,483.17/1,455.93
  6. Step 6: Final answer
    x = 1,363.72

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1.5x scale

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.