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Finding the Fourth Proportional to 1,284.49, 1,771.93 and 753.01

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Solution

The fourth proportional to 1,284.49, 1,771.93 and 753.01 is: 1,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.49 : 1,771.93 = 753.01 : x
  2. Step 2: Convert to fraction form
    1,284.49/1,771.93 = 753.01/x
  3. Step 3: Cross multiply
    1,284.49x = 1,771.93 × 753.01
  4. Step 4: Simplify right side
    1,284.49x = 1,334,281.01
  5. Step 5: Solve for x
    x = 1,334,281.01/1,284.49
  6. Step 6: Final answer
    x = 1,038.76

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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.