Home / 1,047.36-1,569.67-430.36

Finding the Fourth Proportional to 1,047.36, 1,569.67 and 430.36

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Solution

The fourth proportional to 1,047.36, 1,569.67 and 430.36 is: 644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.36 : 1,569.67 = 430.36 : x
  2. Step 2: Convert to fraction form
    1,047.36/1,569.67 = 430.36/x
  3. Step 3: Cross multiply
    1,047.36x = 1,569.67 × 430.36
  4. Step 4: Simplify right side
    1,047.36x = 675,523.18
  5. Step 5: Solve for x
    x = 675,523.18/1,047.36
  6. Step 6: Final answer
    x = 644.98

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1.5x scale

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.