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Finding the Fourth Proportional to 1,465.98, 2,021.76 and 906.36

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Solution

The fourth proportional to 1,465.98, 2,021.76 and 906.36 is: 1,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.98 : 2,021.76 = 906.36 : x
  2. Step 2: Convert to fraction form
    1,465.98/2,021.76 = 906.36/x
  3. Step 3: Cross multiply
    1,465.98x = 2,021.76 × 906.36
  4. Step 4: Simplify right side
    1,465.98x = 1,832,442.39
  5. Step 5: Solve for x
    x = 1,832,442.39/1,465.98
  6. Step 6: Final answer
    x = 1,249.98

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1.5x scale

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.