Home / 1,125.70-1,688.47-304.02

Finding the Fourth Proportional to 1,125.70, 1,688.47 and 304.02

Calculator

Solution

The fourth proportional to 1,125.70, 1,688.47 and 304.02 is: 456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.70 : 1,688.47 = 304.02 : x
  2. Step 2: Convert to fraction form
    1,125.70/1,688.47 = 304.02/x
  3. Step 3: Cross multiply
    1,125.70x = 1,688.47 × 304.02
  4. Step 4: Simplify right side
    1,125.70x = 513,328.65
  5. Step 5: Solve for x
    x = 513,328.65/1,125.70
  6. Step 6: Final answer
    x = 456.01

Related Problems

Find fourth proportional to 562.85, 844.24 and 152.01
Half scale
Find fourth proportional to 2,251.40, 3,376.94 and 608.04
Double scale
Find fourth proportional to 1,126.70, 1,689.97 and 305.02
Similar ratio
Find fourth proportional to 1,688.55, 2,532.71 and 456.03
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.