Home / 1,526.42-2,289.78-430.79

Finding the Fourth Proportional to 1,526.42, 2,289.78 and 430.79

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Solution

The fourth proportional to 1,526.42, 2,289.78 and 430.79 is: 646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.42 : 2,289.78 = 430.79 : x
  2. Step 2: Convert to fraction form
    1,526.42/2,289.78 = 430.79/x
  3. Step 3: Cross multiply
    1,526.42x = 2,289.78 × 430.79
  4. Step 4: Simplify right side
    1,526.42x = 986,419.51
  5. Step 5: Solve for x
    x = 986,419.51/1,526.42
  6. Step 6: Final answer
    x = 646.23

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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.