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Finding the Fourth Proportional to 1,547.13, 2,320.52 and 436.51

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Solution

The fourth proportional to 1,547.13, 2,320.52 and 436.51 is: 654.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.13 : 2,320.52 = 436.51 : x
  2. Step 2: Convert to fraction form
    1,547.13/2,320.52 = 436.51/x
  3. Step 3: Cross multiply
    1,547.13x = 2,320.52 × 436.51
  4. Step 4: Simplify right side
    1,547.13x = 1,012,941.11
  5. Step 5: Solve for x
    x = 1,012,941.11/1,547.13
  6. Step 6: Final answer
    x = 654.72

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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.