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Finding the Fourth Proportional to 1,277.01, 1,916.25 and 692.01

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Solution

The fourth proportional to 1,277.01, 1,916.25 and 692.01 is: 1,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.01 : 1,916.25 = 692.01 : x
  2. Step 2: Convert to fraction form
    1,277.01/1,916.25 = 692.01/x
  3. Step 3: Cross multiply
    1,277.01x = 1,916.25 × 692.01
  4. Step 4: Simplify right side
    1,277.01x = 1,326,064.16
  5. Step 5: Solve for x
    x = 1,326,064.16/1,277.01
  6. Step 6: Final answer
    x = 1,038.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.