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Finding the Fourth Proportional to 913.53, 1,259.67 and 692.07

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Solution

The fourth proportional to 913.53, 1,259.67 and 692.07 is: 954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.53 : 1,259.67 = 692.07 : x
  2. Step 2: Convert to fraction form
    913.53/1,259.67 = 692.07/x
  3. Step 3: Cross multiply
    913.53x = 1,259.67 × 692.07
  4. Step 4: Simplify right side
    913.53x = 871,779.82
  5. Step 5: Solve for x
    x = 871,779.82/913.53
  6. Step 6: Final answer
    x = 954.30

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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.