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Finding the Fourth Proportional to 1,403.61, 2,106.33 and 537.93

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Solution

The fourth proportional to 1,403.61, 2,106.33 and 537.93 is: 807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.61 : 2,106.33 = 537.93 : x
  2. Step 2: Convert to fraction form
    1,403.61/2,106.33 = 537.93/x
  3. Step 3: Cross multiply
    1,403.61x = 2,106.33 × 537.93
  4. Step 4: Simplify right side
    1,403.61x = 1,133,058.10
  5. Step 5: Solve for x
    x = 1,133,058.10/1,403.61
  6. Step 6: Final answer
    x = 807.25

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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.